#!/usr/bin/python

# The ChartDirector for Python module is assumed to be in "../lib"
import sys, os
sys.path.insert(0, os.path.join(os.path.abspath(sys.path[0]), "..", "lib"))

from pychartdir import *

# The value to display on the meter
value = 72.55

# Create an AngularMeter object of size 300 x 180 pixels with transparent background
m = AngularMeter(300, 180, Transparent)

# Center at (150, 150), scale radius = 128 pixels, scale angle -90 to +90 degrees
m.setMeter(150, 150, 128, -90, 90)

# Add a pale grey (0xeeeeee) scale background of 148 pixels radius, with a 10 pixel thick light grey
# (0xcccccc) border
m.addScaleBackground(148, 0xeeeeee, 10, 0xcccccc)

# Meter scale is 0 - 100, with major tick every 20 units, minor tick every 10 units, and micro tick
# every 5 units
m.setScale(0, 100, 20, 10, 5)

# Set the scale label style to 15pt Arial Italic. Set the major/minor/micro tick lengths to 16/16/10
# pixels pointing inwards, and their widths to 2/1/1 pixels.
m.setLabelStyle("Arial Italic", 16)
m.setTickLength(-16, -16, -10)
m.setLineWidth(0, 2, 1, 1)

# Add a smooth color scale to the meter
smoothColorScale = [0, 0x3333ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000]
m.addColorScale(smoothColorScale)

# Add a text label centered at (150, 125) with 15pt Arial Italic font
m.addText(150, 125, "CPU", "Arial Italic", 15, TextColor, BottomCenter)

# Add a red (0xff0000) pointer at the specified value
m.addPointer2(value, 0xff0000)

# Output the chart
m.makeChart("semicirclemeter.png")

